Paver Calculator: Patio Pavers, Sand & Gravel Base
Calculate patio pavers, bedding sand, and gravel base requirements.
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How to Use the Paver Calculator: Patio Pavers, Sand & Gravel Base
- 1Enter patio length and width in feet.
- 2Select paver dimensions (e.g. 4x8, 6x6, 12x12 inches).
- 3Specify gravel base depth (standard 4 to 6 inches) and waste percentage.
- 4Review required pavers, gravel tons, and sand bags.
Formula & How It Works
Paver & Base Material Formula
Pavers = (Patio Area / Paver Area) * (1 + Waste). Gravel Tons = (Area * Depth / 27) * 1.4.
Worked Examples
10x12 Patio with 4x8 Pavers
Input: 120 sq ft, 4x8 pavers, 10% waste
Explanation: 4x8 paver = 0.222 sq ft. (120 / 0.222) * 1.10 = 594 pavers.
Large 20x20 Driveway
Input: 400 sq ft, 12x12 pavers, 10% waste
Explanation: 400 pavers + 10% cut waste = 440 pavers.
Walkway 4x30
Input: 120 sq ft, 6x9 pavers, 10% waste
Explanation: 6x9 paver = 0.375 sq ft. 120 / 0.375 * 1.1 = 352 pavers.
Frequently Asked Questions
How many pavers do I need for a 10x10 patio?▼
A 100 sq ft patio needs about 450 standard 4x8 pavers (or 495 with 10% cut waste).
How deep should the gravel base be under pavers?▼
Pedestrian patios need 4 to 6 inches of compacted gravel base; vehicle driveways require 8 to 12 inches.
How much bedding sand is needed?▼
A uniform 1-inch layer of coarse bedding sand is standard across all paver installations (approx 1 ton per 200 sq ft).
Why should I add 10% waste?▼
Cutting edge pavers against borders and curves creates inevitable scrap pieces.
How much does a ton of gravel cover?▼
One ton of crushed gravel covers about 80 square feet at 3 inches of depth.
Is this tool free?▼
Yes, Toolzy construction calculators are 100% free and client-side.
Quick Reference & Conversion Table
| Paver Size | Area per Paver | Pavers per Sq Ft |
|---|---|---|
| 4" x 8" | 0.222 sq ft | 4.50 pavers |
| 6" x 6" | 0.250 sq ft | 4.00 pavers |
| 6" x 9" | 0.375 sq ft | 2.67 pavers |
| 12" x 12" | 1.000 sq ft | 1.00 paver |
| 16" x 16" | 1.778 sq ft | 0.56 pavers |
⚠️ Common Pitfalls to Avoid
- •Skipping the 10% waste allowance for cut edges and borders.
- •Inadequate gravel base depth (driveways require 8-12 inches; patios require 4-6 inches).
💡 Practical Real-World Uses
- •Homeowners estimating DIY backyard patio material costs.
- •Hardscape contractors calculating material quotes for clients.
- •Landscapers ordering crushed gravel and bedding sand by the ton.
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